Good news is, I wrote BrickBuildr so that if something ever happens to the database, I can rebuild it with no problems. So that's what I'll be looking at later today.
So until further notice, consider BrickBuildr broken, until I post otherwise here. :( Sorry for any the inconvenience!
7:53AM UPDATE: Looks like it wasn't Flickr's API, but some changes I made over the weekend to the back-end of the web-site -- I've got some new projects planned, but before moving forward, I wanted to do some clean up on the code. Anyway, long store short, I'm rebuilding the photo database. I should be restored sometime around lunch today (EST).